document.write( "Question 464153: the sum of three numbers is 12. the frisst number is the differnce of the other two numbers. when you add the other two numbers and subtract 8 the result will be the first number. \n" ); document.write( "
Algebra.Com's Answer #317967 by lwsshak3(11628)\"\" \"About 
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the sum of three numbers is 12. the frisst number is the differnce of the other two numbers. when you add the other two numbers and subtract 8 the result will be the first number.
\n" ); document.write( "...
\n" ); document.write( "1) x+y+z=12
\n" ); document.write( "2) x=y-z
\n" ); document.write( "3) x=y+z-8
\n" ); document.write( "..
\n" ); document.write( "1)x+y+z=12
\n" ); document.write( "4)x-y-z=-8 (rewrite 3)
\n" ); document.write( "add
\n" ); document.write( "2x=4
\n" ); document.write( "x=2
\n" ); document.write( "..
\n" ); document.write( "1) x+y+z=12
\n" ); document.write( "5) x-y+z=0 (rewrite 2)
\n" ); document.write( "subtract
\n" ); document.write( "2y=12
\n" ); document.write( "y=6
\n" ); document.write( "z=y-x (rewrite 2)
\n" ); document.write( "z=6-2=4
\n" ); document.write( "Check:
\n" ); document.write( "x+y+z=2+6+4=12
\n" ); document.write( "x=y-z, 2=6-4
\n" ); document.write( "x=y+z-8, 2=6+4-8 \n" ); document.write( "
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